Features: 1. Attach the oxygen supply tubing to the oxygen source and set the oxygen flow as per prescribed. 2. Check for oxygen flowthrough device. 3. Insert nasal tips into the nostrils, pass the two plstic tubes over the ears and unfer the chin. 4. Gently adjust the plstic slide until the cannula is secure. Description: Item type: Nasal oxygen cannula Material: Plastic Quantity: 1PC Color: As picture shown Size: 1.5m, 2m, 2.5m(Please choose the one you like) Package Incldued: 1 X Nasal oxygen cannula Notes: 1. Please allow slight deviation for the measurement data and make sure you do not mind before ordering. 2. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.